General description This 21mm hexagon socket is designed for 1/2-inch drive tools, suitable for professional use. Made from durable chrome vanadium steel, it is hardened, tempered, and chrome plated to resist corrosion. The socket features a chamfered end for easy nut engagement and a hole for a spring-loaded ball bearing to secure accessories. Technical specifications Size: 21mm hexagon Drive size: 1/2 inch Material: Chrome vanadium steel Finish: Chrome plated Standards: DIN 3122, ISO 3315 Compatibility and accessories Compatible with 1/2-inch drive tools Designed to work with standard sockets and accessories that fit 1/2-inch drives Installation Attach the socket to a compatible 1/2-inch drive ratchet or wrench Ensure the socket is securely fitted before use Usage Use for tightening or loosening nuts and bolts with 21mm hex size Suitable for professional and DIY applications requiring high durability and precision